Improvement in wooden  wagon-spbing



A. SEARLS.

Wagon Spring.

Ptent'ed Dec. 3, 1867.

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l IMPROVEMENT IN WOODEN WAGON-SPRING.

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i KNOW- ALL MEN TO WHOM THESE PRESENTS SHALL COME:

" That I, ANsoN SsAItLs, of the city and county ofSan Francisco, Stateof California, have made a new and useful Improvement in Making WoodSprings for Carriages, which I call the "EndlessWood Spring,- of whichthe following specifications and accompanying drawings are'a clear andexact description.

, The nature of my invention consists in making wood springs for buggiesby a combination with the perch,

the elasticity of the perch portion acting on the spring portion back toits natural position when the weight is l removed. V i I also improvethe strength and elasticity of the spring beyond the ordinary tension ofwood by the particular form shown in the' drawings; the weight on thebody of the carriages causing a portion of the spring to elongate andthe other portion to compress, causing each portion to bring it toreact-on the other, thereby obtaining elasticity, strength, lightness,and durability.

The springmay be made of one piece, forming a spring and perch, and bemade of ash, hickory, lancewood, or other strongelastic timber, bentaround in the desired form, spliced underneath the body. Steelmay becombined with the spring in some cases, passing from --the axle orhead-block to the body, inside or outside of the spring.' It also may beplaced under the body like.the ordinary double-perch buggy, the frontends diverging to each side of the body, and the back ends diverging;from the axle to the body, and the efl'ect gained as by the parallelmanner. a

Figure lis a side view of the spring under the body. p

A A A are the perch portion, and B B the spring portion attaching to'theaxle at G and to head-blocks at G. A pressure on the body causes thespring to depress and elongate, throwing the perch up slightly in themiddle, as shown in the red dotted lines. When the-load is removed theperch reacts. and assiststhef-spring to assume its natural position. Thespring may be given the form of the black dotted lines, and do'away withthe action on the perch, but by so doing loses its reaction force toa-great degree.-

V Figure Z-is a top view of the springs and axle. Claim. I I claim anendless wood spring and perch in combination, substantially as set forthand described.

Signed by me, this eighth day of July, 1867.

ANSON SEARLS.

Witnesses:

JOSEPH H. A'rxmson, A. WINGARD.

